Expansion joint



Patented Apr. 27, 1926.

PATENT OFFICE.

ALBERT C. FISCHER, OF CHICAGO, ILLINOIS.

EXPANSION JOINT.

No Drawing.

To all whom it may concern:

Be it known that I, ALBERT C. FISCHER, a citizen of the United States, residing in Chicago, county of Cook, State of Illinois,

have invented a certain new and useful Improvement in Expansion Joints.

My invention relates to bituminous expansion joints for concrete roads, said joints having incorporated therein excelsior in the place of and in substantially the same proportions of the various organic matter, such as fibers, heretofore generally employed for this purpose.

Excelsior is usually cut from kiln dried lumber which contains little rosin. When incor orated in the bituminous material, whet er solid or cellular, it has the efli'ect of materially stifi'ening the bituminous material, which is very desirable, and at the Application filed September 11, 1922. Serial No. 587,610.

same time the excelsior forms an economical filler. Moreover, excelsior being made up of wooden shreds of substantially transverse dimensions, affords a compressible filling material,

The bituminous material may be in the ALBERT C. FISCHER. 

